[PATCH] b43legacy: Fix rfkill allocation leakage in error paths

2008-01-23 Thread Michael Buesch
We must kill rfkill in any error paths that trigger after rfkill init.

Signed-off-by: Michael Buesch [EMAIL PROTECTED]

---

John, please try to push this for 2.6.24. Seems quite important,
as it leaks resources and might crash the kernel.


Index: wireless-2.6/drivers/net/wireless/b43legacy/main.c
===
--- wireless-2.6.orig/drivers/net/wireless/b43legacy/main.c 2008-01-16 
23:28:50.0 +0100
+++ wireless-2.6/drivers/net/wireless/b43legacy/main.c  2008-01-23 
12:04:41.0 +0100
@@ -3218,38 +3218,45 @@ static void b43legacy_op_remove_interfac
 static int b43legacy_op_start(struct ieee80211_hw *hw)
 {
struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
struct b43legacy_wldev *dev = wl-current_dev;
int did_init = 0;
int err = 0;
+   bool do_rfkill_exit = 0;
 
/* First register RFkill.
 * LEDs that are registered later depend on it. */
b43legacy_rfkill_init(dev);
 
mutex_lock(wl-mutex);
 
if (b43legacy_status(dev)  B43legacy_STAT_INITIALIZED) {
err = b43legacy_wireless_core_init(dev);
-   if (err)
+   if (err) {
+   do_rfkill_exit = 1;
goto out_mutex_unlock;
+   }
did_init = 1;
}
 
if (b43legacy_status(dev)  B43legacy_STAT_STARTED) {
err = b43legacy_wireless_core_start(dev);
if (err) {
if (did_init)
b43legacy_wireless_core_exit(dev);
+   do_rfkill_exit = 1;
goto out_mutex_unlock;
}
}
 
 out_mutex_unlock:
mutex_unlock(wl-mutex);
 
+   if (do_rfkill_exit)
+   b43legacy_rfkill_exit(dev);
+
return err;
 }
 
 static void b43legacy_op_stop(struct ieee80211_hw *hw)
 {
struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
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Re: [PATCH] b43legacy: Fix rfkill allocation leakage in error paths

2008-01-23 Thread Stefano Brivio
On Wed, 23 Jan 2008 12:15:38 +0100
Michael Buesch [EMAIL PROTECTED] wrote:

 We must kill rfkill in any error paths that trigger after rfkill init.
 
 Signed-off-by: Michael Buesch [EMAIL PROTECTED]

Acked-by: Stefano Brivio [EMAIL PROTECTED]


--
Ciao
Stefano
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